
function getUrlParam(name) {
 var reg = new RegExp("(^|&)" + name + "=([^&]*)(&|$)"); //����һ������Ŀ�������������ʽ����
 var r = window.location.search.substr(1).match(reg); //ƥ��Ŀ�����
 if (r != null) return unescape(r[2]); return null; //���ز���ֵ
}

function generateUUID(){
    var d = new Date().getTime();
    var uuid = 'xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx'.replace(/[xy]/g, function(c) {
        var r = (d + Math.random()*16)%16 | 0;
        d = Math.floor(d/16);
        return (c=='x' ? r : (r&0x7|0x8)).toString(16);
    });
    return uuid;
};